[RFC 20/22] drm/i915/slpc: Add slpc support for max/min freq

[tom.orourke@intel.com]

From: Tom O'Rourke <Tom.O'Rourke@intel.com>

Update sysfs and debugfs functions to set SLPC
parameters when setting max/min frequency.

Signed-off-by: Tom O'Rourke <Tom.O'Rourke@intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 6 ++++++
 drivers/gpu/drm/i915/i915_sysfs.c   | 8 ++++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index b705aff..c26260e 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -5118,6 +5118,9 @@ i915_max_freq_set(void *data, u64 val)
 	}
 
 	dev_priv->rps.max_freq_softlimit = val;
+	if (HAS_SLPC(dev))
+		intel_slpc_set_param(dev, SLPC_PARAM_GLOBAL_MAX_GT_FREQ_MHZ,
+				     (u32) intel_gpu_freq(dev_priv, val));
 
 	intel_set_rps(dev, val);
 
@@ -5185,6 +5188,9 @@ i915_min_freq_set(void *data, u64 val)
 	}
 
 	dev_priv->rps.min_freq_softlimit = val;
+	if (HAS_SLPC(dev))
+		intel_slpc_set_param(dev, SLPC_PARAM_GLOBAL_MIN_GT_FREQ_MHZ,
+				     (u32) intel_gpu_freq(dev_priv, val));
 
 	intel_set_rps(dev, val);
 
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index f69b949..ed72c74 100644
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -389,6 +389,10 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
 
 	dev_priv->rps.max_freq_softlimit = val;
 
+	if (HAS_SLPC(dev))
+		intel_slpc_set_param(dev, SLPC_PARAM_GLOBAL_MAX_GT_FREQ_MHZ,
+				     (u32) intel_gpu_freq(dev_priv, val));
+
 	val = clamp_t(int, dev_priv->rps.cur_freq,
 		      dev_priv->rps.min_freq_softlimit,
 		      dev_priv->rps.max_freq_softlimit);
@@ -448,6 +452,10 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
 
 	dev_priv->rps.min_freq_softlimit = val;
 
+	if (HAS_SLPC(dev))
+		intel_slpc_set_param(dev, SLPC_PARAM_GLOBAL_MIN_GT_FREQ_MHZ,
+				     (u32) intel_gpu_freq(dev_priv, val));
+
 	val = clamp_t(int, dev_priv->rps.cur_freq,
 		      dev_priv->rps.min_freq_softlimit,
 		      dev_priv->rps.max_freq_softlimit);
-- 
1.9.1

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